tweak comments
diff --git a/progs/xdemos/pbdemo.c b/progs/xdemos/pbdemo.c
index 9bce569..bc9d812 100644
--- a/progs/xdemos/pbdemo.c
+++ b/progs/xdemos/pbdemo.c
@@ -51,12 +51,16 @@
/*
* Create the pbuffer and return a GLXPbufferSGIX handle.
+ *
+ * We loop over a list of fbconfigs trying to create
+ * a pixel buffer. We return the first pixel buffer which we successfully
+ * create.
*/
static GLXPbufferSGIX
MakePbuffer( Display *dpy, int screen, int width, int height )
{
#define NUM_FB_CONFIGS 4
- char fbString[NUM_FB_CONFIGS][100] = {
+ const char fbString[NUM_FB_CONFIGS][100] = {
"Single Buffered, depth buffer",
"Double Buffered, depth buffer",
"Single Buffered, no depth buffer",